CVE-2026-9203 Server-side request forgery in Progress MarkLogic Server

What is CVE-2026-9203?

CVE-2026-9203 is a high-severity server-side request forgery vulnerability in Progress Software Corporation MarkLogic Server, published on 5 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

A server-side request forgery vulnerability in Progress MarkLogic Server before 11.3.6 and 12.0.3 allows an authenticated user with low-privileged roles to bypass protections for cloud instance metadata endpoints. Successful exploitation can disclose cloud credentials and compromise cloud resources accessible to the host instance.

Weakness: CWE-918

Which versions are affected by CVE-2026-9203?

It affects 1 product.

Products include Progress Marklogic Server.

How do I fix CVE-2026-9203?

No fix has been published for CVE-2026-9203 yet. Limit exposure of the affected software until one is available.

Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.

Is CVE-2026-9203 being exploited?

There is no known exploitation of CVE-2026-9203 in the wild and no public exploit code.

Other vulnerabilities in Progress Software Corporation MarkLogic Server

• CVE-2026-7329 Privilege escalation in Progress MarkLogic Server REST query interfaces Critical 9.9
• CVE-2026-8709 Privilege escalation in Progress MarkLogic Server REST document patch operation Critical 9.9
• CVE-2026-9193 Privilege escalation in Progress MarkLogic Server Hadoop integration Critical 9.9
• CVE-2026-9192 Authentication bypass in Progress MarkLogic Server ODBC App Server Critical 9.8
• CVE-2026-9195 Cross-site scripting in Progress MarkLogic Server Query Console Critical 9.3

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-vc8h-qc29-hjr2.